28 DECEMBER 1901, page 12

Correspondence.

A NEGLECTED FRONTIER QUESTION. (To THE EDITOR OF THE "SPECTATOR.") Snt,--The British public, in common with the majority of the units which compose it, sometimes shows a......

The Eyes Of Mammals, £1. Mechanical Eyes Are The Only

part of the body built, not only on . mechanical principles, but with the geometric outline of lenses and curves which we see in purely mechanical in- ventions like the......